数字海图三维可视化应用技术研究

结合目前数字海图的三维可视化应用需求,对不同类型的数字海图从数据获取、处理、三维表达、可视化管理和应用等方面进行了分析。主要介绍了栅格海图的可视化显示,shp矢量海图图层的自动加载和三维符号化显示,基于海图控件的S-57的SENC海图的动态、多要素海图信息影像化三维表达和管理等方面的内容,为海洋测绘成果应用、测绘信息保障提供新的技术手段和应用平台。

Application Technology for Three-dimensional Visualization of Digital Charts

Combined with the application requirement of three-dimensional visualization of digital chart and aimedat different kinds of digital charts,this paper presents the analysis on data acquiring,processing,three-dimensional expression,visual management and application.The three-dimensional chart application is introducedincluding the visual display of grid chart,automatic space loading of shp vector chart layer and three-dimensionalsymbolization display,dynamic multi-elements transform-to-image three-dimensional expression andmanagement of S-5 7.digital chart based on chart control and so on.Thus the new technology and system areprovided for the application of hydrographic surveying and charting production and mapping informationguarantee.